The size of new houses has shrunk since 2015. (Houses are still two-thirds larger than they were 50 years ago.) But will local governments let developers build smaller, simpler, more affordable housing?

Among themselves, libertarians often see important dividing lines among various factions in terms of social views and lifestyles. But most on the outside define libertarianism as being overwhelmingly for one thing: excessive and "dogmatic" devotion to free markets.